Drive System Accessories

Vibration Cutout Switch — A factory mounted vibration cutout switch is available to effectively protect against rotating equipment failure. BAC can provide either a mechanical or solid-state electronic vibration cutout switch in a NEMA 4 enclosure to ensure reliable protection. Additional contacts can be provided on either switch type to activate an alarm. Remote reset capability is also available on either switch type.

Vibration Cutout Switch

Extended Lubrication Lines — Extended lubrication lines are available for lubrication of the fan shaft bearings. Fittings are located on the exterior casing panel next to the access door.

Cold Water Basin AccessoriesMechanical Water Level Con

Electric Water Level Control — BAC’s Electric Water Level Control (EWLC) is a state-of-the-art conductivity actuated, probe type liquid level control. The hermetically sealed EWLC is engineered and manufactured specifically for use in evaporative cooling systems and is equipped with an error code LED which illuminates to indicate status, including when the water and/or probes are dirty. The EWLC option replaces the standard mechanical make-up valve, and includes a slow closing, solenoid activated valve in the make-up water line to minimize water hammer. EWLC is recommended when more precise water level control is required and in areas that experience subfreezing conditions.

Electric Water Level Control

Basin Sweeper Piping — Basin sweeper piping is an effective method of eliminating sediment that may collect in the basin. A complete piping system, including nozzles, is provided in the basin to connect to side stream filtration equipment (provided by others). For more information on filtration systems, consult the Filtration Guide.

Basin Sweeper Piping

Basin Heaters — Evaporative cooling equipment exposed to below freezing ambient temperatures require protection to prevent freezing of the water in the cold water basin when the unit is idle. Factory-installed electric immersion heaters, which maintain 40°F (4.4°C) water temperature, are a simple and inexpensive way of providing such protection.

Basin Heater

Heater kW Data

Model Numbers

0°F (-17.8°C) Ambient Heaters

-20°F (-28.9°C) Ambient Heaters

Number of Heaters

kW per Heater

Number of Heaters

kW per Heater

FXV-0806

1

4

1

6

FXV-0809

1

6

1

8

FXV-0812

1

8

1

12

FXV-0818

1

12

1

18

FXV-1212

1

12

1

16

FXV-1218

1

16

2

12

Note: The table data is based on 460V/3 phase/60Hz power and standard, single-cell configuration.

Fill Accessories

High Temperature Fill — An optional high temperature fill material is available which increases the maximum allowable spray water temperature to 140°F (60°C). The BAC selection program determines if a fill change is required by considering all of the design requirements. The spray water temperature should not be confused with the temperature of the process fluid contained in the coil, which can go up to 180°F (82.2°C).

Coil Fill Technology

Air Discharge Accessories

PCD Hoods and Insulation — The innovative design of BAC closed circuit cooling tower’s results in a low heat loss when the unit is idle. When additional heat loss prevention is desired, PCDs with stainless steel linkages and damper actuators can be provided. The motor actuators are easily accessible. The addition of factory mounted insulation to the hood and/or casing further reduces the heat loss by minimizing losses due to conduction. Per ASHRAE 90.1-2010 either an automatic 3 way valve or PCDs are required on Closed Circuit Cooling Towers used on heat pump applications when used in heating applications.
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PCD Hood Installation

SunScreens — The corrosion resistant SunScreens are mounted above the spray distribution system and help to smooth the airflow into the coils for optiemum thermal performance. They also prevent strong winds from carrying spray water out of the unit and block sunlight in locations previously susceptible to algae growth. SunScreens are constructed in easy to handle sections to facilitate removal, inspection, and replacement.